From: sds@tycho.nsa.gov (Stephen Smalley)
Date: Mon, 3 Aug 2015 09:27:48 -0400
Subject: [refpolicy] kdbus support
In-Reply-To: <55BF5F1B.1010002@redhat.com>
References: <55BF5F1B.1010002@redhat.com>
Message-ID: <55BF6C54.9070806@tycho.nsa.gov>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On 08/03/2015 08:31 AM, Miroslav Grepl wrote:
> I am working on kdbus support on Fedora 24. Basically we need to add
> support for
> 
> /sys/fs/kdbus
> 
> and I am thinking about correct labeling. Something like
> 
> +type kdbusfs_t;
> +fs_type(kdbusfs_t)
> +files_mountpoint(kdbusfs_t)
> +dev_associate_sysfs(kdbusfs_t)
> +genfscon kdbusfs / gen_context(system_u:object_r:kdbusfs_t,s0)
> 
> What do you think about kdbusfs_t label?

Until kdbus has LSM hooks, it should not be accessible by anything.
Otherwise, it is a completely uncontrolled IPC mechanism by which
anything is free to violate policy on the system.